Means for effecting rotary operations in step presses



Dec. 9, 1930. E. B. NIER- 1,784,745

MEANS FOR EFFECTING ROTARY OPERATIONS IN STEP PRESS ES Fil d 011- 29,1926- 4 Sheets-Sheet 1 Dec. 9, 1930. NIER 1,784,745

MEANS FOR EFFECTING ROTARY OPERATIONS IN STEP PRESSES Filed Oct 29, 19264 Sheets-Sheet 2 m enfor E. B. NIER I ,784,745 MEANS FOR EFFECTTNGROTARY OPERATIONS IN STEP PRESSES Dec. 9, 1930.

4 Sheets-Sheet 3 Filed Oct. 29; 1926 HHQNHH HE 930 E. B. NIER 1,784,745MEANS FOR EFFECTING ROTARY OPERATIONS IN STEP PRESSES Filed Oct. 29, 192"4 Sheets-Sheet 4 Patented Dec. 9, 1930 UNITED S A- 35 PATENT O C ERNSTBRUNO Immora mi GERMANY:

MEAnsfFoR'nrnnc trrnelno'ranrornnn rionsin stun rnnssns" 7 Applicationfiled. October 29, 1926, sen-alive.

- machines only one type of operationsyeither straight-line or rotary,could'be performed and so it Wasnec'essary to'p'erform each type ofoperations in a separate machine.)

In my invention, lovercome this 'dravvbaclrby providing ina multiple'pressa' rotary jmand'rel on which the Workis carried and Withthismandre'l I combine means-for exerting radial pressure on the Work Whileit is rotatingwitlr the mandrel; p

The invention is particularly adapted to be built or fitted in steppresses, that is, presses of the type; wherein one "and the sameWork-piece passes successively through different operating or Workingstages. These operations, however, all take place siinultaneously withrespect to different work-pieces, which are moved successively past theindividual tools. I

For'instance, Ima-y provide an appliance of this kind in a press formaking cupshaped ordished'articles of sheet metal,.-the Workbeingcupped, pressed, punched etc. in successive stages by areciprocating ram as in the usual one-purpose-machines; But Whereas in'such machines it Was necessary to move the Work to another one-purposemachine when it Was desired to perform thereon operations based onrotary motion, as threading, rolling, spinning, cro'zin'g, flang'ingetc.',-that is, two machines were re quiied, in my invention the twomachines are combined into a single unit in which both types ofoperations are performed.

"The necessity of "providing --tvvoor more machines for operating on thesame piece of ivork is evidently a'serious draw- .back, particularly inquantity production, involving not only the initial,;maintena1ice anddepreciation costs of tWo-machinesbut also 'the "labour" "for attendingthe second machine' 145,044, and inGermany Npvemb er 7, 1925.

machine to the-other. f

Inmy invention I combine two one-purpose machine's intoa single unitthrough the medium of an appliance wvhich may be readily fitted to anyexisting forging machine. f 1 In the drawings a forging machine forperforming eight stages of operation on a dish shaped Work isillustrated by way of example,- it being understood that I am notlimited to'this or any other type of forging.

In the dra'vvings Fig. 1 is a section ofthe die-headottii machine on theline 1-1 in Fig. 3, V

- Fig. 2 is-an end elevation viewedi'rom the left in Fig. 1, y '1 Fig. 3is a plan View ofthe head, Fig. 4 is a somewhatdiagrammatic elevation,and

Fig. 5 isa similar plan View, of the comf pletemachineh a I Referringfirst toFigsp 4 and 5, 1 is the frame of the machine, 2 is themaindriving shaft, 3 is the driving pulley, 4 is a smaller pulley,both.on theshaft 2,5 is a belt on the smaller pulley 4: which impartsrotation to a lay shaft '6, m is a "belt passing round a pulley 7 in theframe 1 and the mandreln Which is rotatably carried on a pin'n in thedie head 7) of the machine, and'ajis the ram to which Vertical rreciprocation is imparted by any suitable means, not shown;

As indicated in Fig. 5, the work is successively moved pasteightstations 7w, e0 .w in the table oi the machine, and cri is assumedto he the'station Where an operation requiring ro a y ra f .t wcrk i p frm d Qb i us y I am estimated 7 a numb s riation s ee tee percentag v.Wher r t ry ocerat en are Pe f ratedstations io to b PiQlTfQ HW-iIa ilStat on the mandrel n. 5

{llhewram aeisfianged at the and is recip'rocated vertically by anysuitable means,

"machine" and for moving the Work from one spring Z is deformed at anearlier the springs It.

not shown. A pin 0 with a conical point is inserted in the ram (4 andsurroundedby a coiled spring 6 which is inserted between a shoulder in abore of the ram and a flange above the point of the pin, the point engaging a recess in the pin a about which the mandrel 'n is rotated. Fourpins 9 are screwed into the flange of the ram (1 and springs 70 areinserted betweenthe flange andan annu lus fin which the pins 9 makeasliding' fit. Heads 9 are formed on-thelowerends of the pins 9 beneaththe annulus f Four, studs 2' are inserted in the annulus 7 and extenddownwardly therefrom to, the top of the strip:

per .2 which 'isadapted to slide in the die The flanging tool is asteelroller- 7) on the inner end of a slideo whichis guided in the 7 die headI), Reciprocation is imparted to the slide by a bar 1* and adouble-armed lever 1" on a shaft A short link 0- connects the upper eyeof the" lever -7 with a forko" which is inserted in the slide 0 with itsthreaded end 0'. V A ilock nut 1 serves for holding the threaded end inposition on the slide 0. In this manner the position of the roller pwith respect to the mandrelm is exactly adjusted, Y 1 Reciprocation isimparted to the ,slide 0 in time with the reciprocation of the rani athrough a cam t on the ram, Fig. 4, and a double-armed lever 02 which isfulcrumed in the frame .1 and is engaged by thecam t at one end andlinked tothe bar r at the other. A spring 4) tends to hold the end'vofthe lever 'vengaged with the cam t, The. stripper e is cutaway oppositethe slide-0 soas to permit the reciprocation of-theroller p.

The T operation of my improved appliance isas follows: I V a When thework to has been placed on the constantly rotating mandrelnwhich may beelfected by hand or by automatic means, not shown-the ram mdescends andforces down the strippers against the action of its spring Z until itrests on a shoulder in the die head Z). WVhen the cam t reaches theupper end of the lever 22, the roller j). is moved towards the mandreland flanges the edge of the work w about the bead on the mandrel n. Whenthe flanging operation is finished the ra n at is raised, the cam tallows the roller 2) to recedefrom the workunder the action of thespring'v" and the strippers ejects the I Work.

My invention has been described in con- VIIBCtIQD Wlth a multipleforging machine and with themachining of a dish shaped article thestation or stations at which such rotary operation is, or suchoperations are, performed maybe arranged asdes red, the flangmgoperation atthe statlon e0 b611'1g d8- scribed merely by way of example.

5 I claim:

1. Ina press having arowoftoolsadapted to'perform drawing, punching,stamping, or similar operatlons, apparatus for producing hollow, dished,cover-shaped, 5 or "similar bodies, comprising devices capableofvertical operations, and a dev ce capable of rotational operation,-said last named a device being adapted for-drawing, rolling, beading,flanging, and the like, and means for controlling and operatingsaiddevices, wherebyvertical rectilinear operations andv ac-hori'zontalr0- tary operation may be performed simultaneously in a single machine.3 r

2. Apparatus for producing dished Govershaped orsimilar bodies incombination with i;

apress havinga driving shaft, a rectilinear-1y movable element, a"horizontally adjustable and rotatable tool, a rotatable mandrel, meansfor rotating said mandrel derivedfrom the driving shaft offthe press andmeans for imparting movement to the tool comprising a system of arms andlevers whose movement is derived from the rectilinearly movable element.i

' 3. -Apparatus according toclaim 2 inwhich the means foroperatingthesystem of arms or levers comprises a camrand a spr1ng,sa1d cam bemgsecured to the rectllmearlymovable element and descending therewith andhead and coaxially with said element, means T 1 for rotating themandrel,a rotatablefianging tool mounted to slide horizontally on thedie head and adapted to cooperate with said mandrel, and means forvarying the position of said-,flanging tool with "respect to saidmandrel in time with the-motion of said reciprocating element. 7

5.'A machine oft-he character described, comprising a diehead,"averticalreciprocable element above the'die head, a mandreladapted to. support the workand {arranged within the diehead andcoaxially'wlth said element, means for rotating'said mandrel, arotatable 'fianging tool mounted to; slide on the die head and; adaptedto cooperatewith saidmandrel,

Cal

and means operably connected with said re eiproeating element forvarying the position of said flanging tool with respect to said mandrelin time with the motion of said reoiproeating element. i

In testimony whereof, I have signed my name to this specification.

ERNST BRUNO NIER.

